On 03/21/2013 07:40 PM, carol white wrote:
Hi,
It must be an easy question but how to boxplot a subset of data:

data = read.table("my_data.txt", header = T)
boxplot(data$var1[data$loc == "nice"]~data$loc_type[data$loc == "nice"])
#in this case, i want to display only the boxplot loc == "nice"
#doesn't display the boxplot of only loc == "nice". It also displays loc == 
"mice"

Hi Carol,
It's them old factors sneakin' up on you. Try this:

boxplot(data$var1[data$loc == "nice"]~
 as.character(data$loc_type[data$loc == "nice"]))

Jim

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